Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 816 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
3. 3.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is hot (d) the straw is magnetic
4. 4.True or false: a compass needle works by air pressure. (a) False (b) True
5. 5.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a magnetic pin holder (d) a drinking straw
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) how full the glass is (c) the way we turn it (d) whether the card stays
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
11. 11.True or false: a suction hook works by air pressure. (a) False (b) True
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a compass needle
15. 15.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
16. 16.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a vacuum cleaner (d) a fridge magnet
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a stiff postcard
19. 19.True or false: a drinking straw works by magnetism. (a) True (b) False
20. 20.True or false: a bicycle pump works by magnetism. (a) True (b) False
21. 21.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
22. 22.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) yeast
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
27. 27.True or false: a medicine dropper works by magnetism. (a) False (b) True
28. 28.True or false: a suction hook works by magnetism. (a) True (b) False
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a battery cell (d) a towel
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
33. 33.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a vacuum cleaner
34. 34.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a suction hook (d) a drinking straw
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a balloon (d) yeast
36. 36.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
40. 40.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet

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